Digital Equipment VAXstation 3100 Maintenance Manual page 159

138 Expansion Boxes
Table 6-2 RZ55 Expansion Box FRU Section Listings
FRU
Power supply
RZ55 disk drive and electronics module
Resistor load board
SCSI ID switch module
Section
6.1.3.3
6.1.3.1
6.1.3.4
6.1.3.2
6.1.3.1
RZ55 Disk Drive Removal From Expansion Box
The following section describes the removal and replacement procedure for
the RZSS and
its
electronics module. If you have
already
replaced the drive 's
electronics module and a problem still exists, you
must
replace the whole
drive instead of replacing
just
the following electronics module as described.
1. Switch off power to the expansion box.
2. Unscrew the
four
cover screws and remove the expansion
box
cover
(Figure 6-5).